#define outb_p(value,port) \
__asm__ ("outb %%al,%%dx\n" \
        "\tjmp 1f\n" \
        "1:\tjmp 1f\n" \
        "1:"::"a" (value),"d" (port))

#define inb_p(port) ({ \
unsigned char _v; \
__asm__ volatile ("inb %%dx,%%al\n" \
    "\tjmp 1f\n" \
    "1:\tjmp 1f\n" \
    "1:":"=a" (_v):"d" (port)); \
_v; \
})
